单项选择题根据元素的电负性数值,判断下列原子中哪一个获得电子的能力最强。According to the electronegativity of the elements, which of the following atoms has the strongest ability to obtain electrons.A. AlB. SiC. ClD. O
单项选择题生育保险费由用人单位缴纳。 A、正确 B、错误
